user
Write a response that appropriately completes the request.

### Instruction:
Describe the Automata Theory in 2 sentences.

### Response:
assistant
Automata theory is a branch of computer science which studies abstract machines and the ways in which they receive, process, and output data and the behaviors of those machines. Historically, it has become a fundamental tool for understanding and designing complex computer systems, especially in the realm of artificial intelligence and robotics.